EP0517717B1 - Die verwendung eines trockengemisches aus methylcellulose und carboxymethylstärke zur herstellung wässriger klebstoffe mit verminderter trockenklebkraft und gewünschtenfalls guter feuchtfestigkeit - Google Patents
Die verwendung eines trockengemisches aus methylcellulose und carboxymethylstärke zur herstellung wässriger klebstoffe mit verminderter trockenklebkraft und gewünschtenfalls guter feuchtfestigkeit Download PDFInfo
- Publication number
- EP0517717B1 EP0517717B1 EP91903920A EP91903920A EP0517717B1 EP 0517717 B1 EP0517717 B1 EP 0517717B1 EP 91903920 A EP91903920 A EP 91903920A EP 91903920 A EP91903920 A EP 91903920A EP 0517717 B1 EP0517717 B1 EP 0517717B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- dry
- methyl cellulose
- production
- starch
- synthetic resin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J103/00—Adhesives based on starch, amylose or amylopectin or on their derivatives or degradation products
- C09J103/04—Starch derivatives
- C09J103/08—Ethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2666/00—Composition of polymers characterized by a further compound in the blend, being organic macromolecular compounds, natural resins, waxes or and bituminous materials, non-macromolecular organic substances, inorganic substances or characterized by their function in the composition
- C08L2666/02—Organic macromolecular compounds, natural resins, waxes or and bituminous materials
Definitions
- the invention relates to the use of for the production of aqueous Suitable dry mixtures consisting of methyl cellulose, Carboxylmethyl starch, if desired synthetic resin redispersion powder and if desired, other auxiliary substances.
- Dry mixtures based on cellulose and / or starch derivatives which are suitable for the production of aqueous adhesive preparations are Known specialist.
- aqueous adhesive preparations are well suited for gluing paper, especially for wallpapering walls and Blankets and are often referred to as (wallpaper) paste.
- MC Methyl cellulose
- MHPC methyl hydroxypropyl cellulose
- HEC hydroxyethyl cellulose
- CMC carboxymethyl cellulose
- CMS carboxymethyl starch
- HPS hydroxypropyl starch
- Such dry mixtures for Production of aqueous adhesives or pastes based on water-soluble non-ionic cellulose ethers and water-soluble, starch ethers containing anionic groups and their use for gluing papers are e.g. in the published application DE 32 32 614.
- special manufacturing processes of this type Suitable dry products as a paste base are known to the person skilled in the art known, e.g. from published patent application DE 37 34 491. From This and other documents are also combinations of methyl cellulose and carboxymethyl starch are known as such dry mixtures. It is not known and previously described that one specific ratio of these substances there are specific adhesive properties let set.
- EP-A-0 103 772 describes dry mixtures of the Above type for the production of aqueous adhesives Methyl cellulose and carboxymethyl starch in a ratio of 5: 95 to 80: 20. To make it easier to remove a wallpaper later, the surface must be be prepared.
- JP-A-61 036 385 describes an adhesive made from methyl cellulose, Polyvinyl acetate, benzimidazole and water in the weight ratio of 10: 0.2: 1: 0.15. It enables easy removal of Wallpaper.
- carboxymethyl starch and methyl cellulose an adhesive in a certain ratio to each other result that has a minimum dry adhesive strength, what it makes it possible to use a dry, peelable adhesive without adhesive additives to prescribe. At the same time, however, you can also use it achieve good moisture resistance from synthetic resin redispersible powders.
- the object of the invention is to provide a dry mixture, which is suitable for the production of aqueous adhesives, in particular for gluing wall coverings, suitable and also adjusted is that the adhesive has a relatively low dry tack has, so that the substrates in the dry state slightly apart are to be separated. If desired, high moisture resistance should also be be given, especially if the coverings after gluing should be painted over or in so-called wet rooms should be glued.
- the dry mixtures contain, if desired Resin redispersion powder.
- Resin redispersion powder Such synthetic resins are usually film-forming thermoplastic polymers.
- Polymer compounds redispersible in water are all suitable in Previously used polymer types as pure mixture products. Both homopolymers and / or copolymers come into consideration here of the selected substance classes. Typical representatives for these polymer compounds are vinyl esters of lower carboxylic acids, the vinyl acetate and / or the vinyl propionate being special Importance.
- in copolymers used in practice for example vinyl acetate / maleinate copolymers or ethylene / vinyl acetate copolymers.
- Copolymers are understood to mean copolymers those from the reaction of two or more different ones Classes of substances which are suitable as polymerizable monomers emerge.
- Non-ionic cellulose ethers are essential for the production of paste especially the methyl cellulose to the suitable substances.
- a methyl cellulose in the dry mix contain a preferred degree of methylation of about 1.3 to 2.6 has.
- the methyl cellulose in one particular embodiment may be ethoxylated and / or propoxylated.
- a degree of alkoxylation of 0.05 to 1.5 (MS) is preferred.
- carboxymethylated starch modified natural starch types e.g. from potatoes, corn, Wheat, rice and the like, derivatives based on potatoes and / or corn starch are particularly suitable.
- Embodiment contain the dry mixtures according to the invention Carboxymethyl starch with a degree of carboxymethylation of 0.1 to 0.7 (DS).
- the dry mixtures contain other auxiliary substances.
- auxiliary substances are in particular Contain fillers, wetting agents and / or preservatives.
- Kaolin for example, can be used as filler or filler and chalk are used.
- wetting agents all can be used for such Known surfactants are used.
- Suitable Preservatives are also known to the person skilled in the art. The if necessary, in addition to the main components Aids make up a minor part of weight, he which is preferably less than 20% by weight of the dry mixture.
- a suitable, relatively simple procedure for the preparation of the dry mixtures consists in that the individual components like MC, CMS and, if desired, synthetic resin redispersion powder and if desired, other auxiliaries as drying agents physically be mixed together. It is preferred by an intimate Mixing to achieve the most homogeneous distribution possible.
- Another one a suitable process is the drum drying process as it is e.g. is described in the aforementioned DE 37 34 491. Also suitable the so-called spray drying process is described in the unpublished German application with the original file number DE 39 12 983. In the latter two The dry ingredients are first processed using liquid a pumpable slurry is produced, which depending on the process either dried in thin layers on rollers or in on and spray-dried in a spray tower in a manner known per se becomes.
- Table 1 shows the adhesive strength of the mixture of CMS and MC over the entire mixing range for different dilution ratios. Increasing the proportion of methyl cellulose was up to a ratio from 30: 70 from MC to CMS a lower adhesive strength than with pure CMS.
- Table 2 shows the adhesive strength for a section of the mixing area with smaller changes in the mixing ratio than in Table 1.
- Table 3 shows the bond strength for the same MC / CMS mixing ratios as in Table 1 with a constant addition of polyvinyl acetate (15% by weight based on the total mixture). A minimum adhesive force was also observed with this addition.
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
- Polysaccharides And Polysaccharide Derivatives (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Description
- Methylcellulose (I),
- Carboxymethylstärke (II),
- gewünschtenfalls Kunstharz-Redispersionspulver und
- gewünschtenfalls weiteren Hilfsstoffen,
Claims (10)
- Verwendung eines Trockengemisches, bestehend ausMethylcellulose (I),Carboxymethylstärke (II),gewünschtenfalls Kunstharz-Redispersionspulver undgewünschtenfalls weiteren Hilfsstoffen, wobei (I) und (II) ein Verhältnis zueinander von 3 : 97 bis 30 : 70 aufweisen
- Verwendung nach Anspruch 1, dadurch gekennzeichnet, daß das Verhältnis von (I) zu (II) 4 : 96 bis 20 : 80, insbesondere 5 : 95 bis 10 : 90, beträgt.
- Verwendung nach Ansprüchen 1 und 2, dadurch gekennzeichnet, daß bis zu 40 Gew.-%, insbesondere 10 bis 30 Gew.-%, Kunstharz-Redispersionspulver enthalten sind.
- Verwendung nach Ansprüchen 1 bis 3, dadurch gekennzeichnet, daß als Kunstharz-Redispersionspulver Polyvinylacetat enthalten ist.
- Verwendung nach Ansprüchen 1 bis 4, dadurch gekennzeichnet, daß die Methylcellulose einen Methylierungsgrad von 1,3 bis 2,6 aufweist.
- Verwendung nach Ansprüchen 1 bis 5, dadurch gekennzeichnet, daß die Methylcellulose ethoxyliert und/oder propoxyliert ist, insbesondere mit einem Alkoxylierungsgrad von 0,05 bis 1,5.
- Verwendung nach Ansprüchen 1 bis 6, dadurch gekennzeichnet, daß die Carboxymethylstärke einen Carboxymethylierungsgrad von 0,1 bis 0,7 (DS) aufweist.
- Verwendung nach Ansprüchen 1 bis 7, dadurch gekennzeichnet, daß als weitere Hilfsstoffe Füllmittel, Netzmittel und/oder Konservierungsstoffe, vorzugsweise insgesamt weniger als 20 Gew.-% enthalten sind.
- Verwendung nach Ansprüchen 1 bis 8, gekennzeichnet durch die Herstellung des Trockengemisches durch Vermengen der trockenen Bestandteile oder durch Walzen- oder Sprühtrocknung eines aus den Bestandteilen hergestellten Slurries.
- Verwendung der wäßrigen Klebstoffe nach Ansprüchen 1 bis 9 zum Verkleben von Papier oder anderen saugfähigen Cellulosematerialien, insbesondere Tapeten.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4006001 | 1990-02-26 | ||
DE4006001A DE4006001A1 (de) | 1990-02-26 | 1990-02-26 | Trockengemische zur herstellung waessriger klebstoffe mit verminderter trockenklebkraft und gewuenschtenfalls guter feuchtfestigkeit |
PCT/EP1991/000309 WO1991013121A1 (de) | 1990-02-26 | 1991-02-19 | Trockengemische zur herstellung wässriger klebstoffe mit verminderter trockenklebkraft und gewünschtenfalls guter feuchtfestigkeit |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0517717A1 EP0517717A1 (de) | 1992-12-16 |
EP0517717B1 true EP0517717B1 (de) | 1999-05-12 |
Family
ID=6400982
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP91903920A Expired - Lifetime EP0517717B1 (de) | 1990-02-26 | 1991-02-19 | Die verwendung eines trockengemisches aus methylcellulose und carboxymethylstärke zur herstellung wässriger klebstoffe mit verminderter trockenklebkraft und gewünschtenfalls guter feuchtfestigkeit |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0517717B1 (de) |
AT (1) | ATE180006T1 (de) |
DE (2) | DE4006001A1 (de) |
WO (1) | WO1991013121A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19605969A1 (de) * | 1996-02-17 | 1997-09-04 | Mike Wiegand | Styroporkleber pulverförmig |
PL1767566T3 (pl) * | 2005-09-14 | 2007-11-30 | Nat Starch & Chemical Investment Holding Corp | Nowe kleje wodne do zastosowań przemysłowych |
Family Cites Families (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3232614A1 (de) * | 1982-09-02 | 1984-03-08 | Henkel KGaA, 4000 Düsseldorf | Trockengemische zur herstellung von waessrigen klebstoffen sowie deren verwendung zum verkleben von papieren |
-
1990
- 1990-02-26 DE DE4006001A patent/DE4006001A1/de not_active Withdrawn
-
1991
- 1991-02-19 AT AT91903920T patent/ATE180006T1/de not_active IP Right Cessation
- 1991-02-19 WO PCT/EP1991/000309 patent/WO1991013121A1/de active IP Right Grant
- 1991-02-19 EP EP91903920A patent/EP0517717B1/de not_active Expired - Lifetime
- 1991-02-19 DE DE59109127T patent/DE59109127D1/de not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
WO1991013121A1 (de) | 1991-09-05 |
ATE180006T1 (de) | 1999-05-15 |
DE4006001A1 (de) | 1991-08-29 |
DE59109127D1 (de) | 1999-06-17 |
EP0517717A1 (de) | 1992-12-16 |
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